Short Answer Type

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Name one important function of nucleic acids in our bodies.


Nucleic acids are known as polynucleotides as they are long-chain polymers of nucleotides.

Two main functions of nucleic acids are:

(i) DNA is responsible for the transmission of inherent characters from one generation to the next. This process of transmission is called heredity.

(ii) Nucleic acids (both DNA and RNA) are responsible for protein synthesis in a cell.
Even though the proteins are actually synthesised by the various RNA molecules in a cell, the message for the synthesis of a particular protein is present in DNA.

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Multiple Choice Questions

Glucose gives silver mirror with Tollen's reagent, it shows the presence of

  • An acidic group
  • An alcoholic group
  • A ketonic group
  • An aldehyde group
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Ribose sugar is a component of

  • DNA

  • RNA

  • Glucose

  • Wax

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Which one is not present in RNA?

  • Uracil

  • Thymine
  • Ribose

  • Phosphate

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The store house for all biological information is

  • m-RNA

  • t-RNA

  • r-RNA

  • DNA

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Short Answer Type

Name two purine bases present in DNA.

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Name the disaccharide which on hydrolysis give a mixture of glucose and fructose.
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Multiple Choice Questions

Which of the following monosaccharide is pentose?

  • Glucose

  • Fructose

  • Arabinose

  • Galactose

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Which of the following is a disaccharide

  • Fructose

  • Glucose

  • Sucrose

  • Ribose

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Short Answer Type

Why is cellulose in our diet not nourshing?

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